NOTE to SPECIFIER: Select from the Following

NOTE to SPECIFIER: Select from the Following

((Specifier leave this line)) SBBC Design & Material Standards, January 01, 2010 Edition)

SECTION 07540 (07 54 19)

THERMOPLASTIC MEMBRANE ROOFING

PART 1 GENERAL

1.1 SECTION INCLUDES

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NOTE TO SPECIFIER: Select from the following:

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  1. [Adhered] [Mechanically fastened, Owner approved] thermoplastic membrane roofing system.
  1. RELATED SECTIONS
  2. Section 03520-Insulating Concrete.
  3. Section 07220-Roof Insulation.
  4. Section 07600-Flashing and Sheet Metal.
  5. Section 07920-Joint Sealants.
  6. REFERENCES
  7. American Society of Civil Engineers (ASCE).
  8. ASCE 7-Minimum Design Loads for buildings and Other Structures.
  9. American Society for Testing and Materials (ASTM).
  10. ASTM D 6754-Ketone Ethylene Ester Based Sheet Roofing.
  11. ASTM D 6878-Thermosplastic Polyolefin Based Sheet Roofing.
  12. ASTM E 408-Total Normal Emittance of Surfaces Using Inspection Meter Techniques.
  13. ASTM E 903-Solar Absorptance, Reflectance, and Transmittance of Materials Using Integrating Spheres.
  14. ASTM E 108-Test Methods for Fire Tests of Roof Coverings.
  15. ASTM E 1980-Practice for Calculating Solar Reflectance Index of Horizontal and Low-Slope Opaque Surfaces.
  16. Florida Building Code (FBC).
  17. Underwriters Laboratory, Inc. (UL): Fire Hazard Classification Rating.
  18. SYSTEM DESCRIPTION
  19. KEE sheet membranes applied to lightweight insulating concrete decks at low slope roofs.
  20. TPO sheet membrane applied to cover board on insulation board on Tectum roof deck system at steep slope roofs or applied to lightweight insulating concrete at low slope roofs.
  21. Roof Slopes at the membrane level for all roof surfaces:
  22. New Construction: Ensure not less than 1/4 inch per foot.
  23. Re-Roofing Existing: Ensure not less than 1/8 inch per foot.
  24. Slope Verification (new or existing): After installation of “dry-in” membrane, Contractor shall employ the services of a licensed Land Surveyor, registered in the State of Florida, to verify that decks with insulation possess a minimum slope as required above.

(a) At areas of concrete deck that do not have the minimum required slope, Contractor shall add insulation as required to achieve the required slope.

(b) Re-Roofing: Add insulation on a Unit Price basis, as required to maintain the required slope, if this work was not indicated to be included in the lump sum bid.

  1. Secure Owners approval for special conditions where the above required slopes can not be provided.
  2. Contractor shall also address areas of ponding in the same manner as above.
  1. SUBMITTALS
  2. Product Data: Provide current standard printed product literature indicating characteristics of membrane materials, flashing materials, components, accessories, product specifications and installation instructions.Shop Drawings: Submit plans of roof showing pitches and locations of details. Submit custom details for every condition, including drain sumps, overflows and scuppers, surface mounted counter flashings, equipment base flashings, also showing attachment of extensions and flashings for pipes and vent stacks.
  3. Solar Reflectance Index (SRI) product data.
  4. Samples:
  5. Submit 12 inch by twelve 12 inch samples of roofing membranes and accessories, with manufacturer's identification labels attached.
  6. Submit representative samples of each type of fastener, insulation and roofing accessory with manufacturer’s identification labels attached.
  7. Application Manual: Submit manufacturer's application manual, which describes completely the preparation of surfaces and application of specified materials, including details to suit all conditions.
  8. Applicator’s Status: Submit manufacturer's written proof of approved applicators status, submitted by the Manufacturer’s Corporate Office.
  9. Manufacturer’s Letter: Submit letter from the membrane roofing manufacturer confirming the number of years it has directly manufactured the proposed primary roofing system under the trade name and/or trademarks as proposed.
  10. Manufacturer’s History of Installations: Submit a list of 3 installations of the specified roofing system in the south Florida HVHZ area which have been performing for a minimum of 5 years.
  11. Material List: Submit a descriptive list of all component parts of the roofing systems that will be covered under warranty.
  12. Membrane Fastening Patterns: Provide drawings of fastener patterns as required to resist specified negative wind pressures, signed and sealed by a registered engineer, licensed in the State of Florida.
  13. Delivery Tickets: Provide Contractor and Architect with bills of lading for roofing system products, at time of delivery to the project site.
  14. Roofing Manuals: Submit, in a three-ring binder, all roofing data, including manufacturer’s catalogs/manuals of materials and accessories used in the Project, including manufacturer’s recommendations.
  15. Sample Warranty: Submit a specimen copy of the specified warranty, with a list of all components to be guaranteed.
  16. Complete current Florida Building Code (FBC) High Velocity Hazard Zone (HVHZ) Protocols and required product Notice of Acceptance (NOA).
  17. QUALITY ASSURANCE
  18. Manufacturer’s Qualifications: Provide primary products, including roofing membrane, flashings, vapor retarder (if any), and accessories produced by a single manufacturer. Provide secondary products only as recommended by manufacturer of primary products for use with roofing system specified. Manufacturers complying with the specified criteria shall also comply with the following:
  19. Experience: Shall have been in the business of manufacturing thermoplastic roofing membrane systems for a minimum of 5 years.
  20. Manufacturers shall manufacture their own membranes. Private label membranes are not acceptable.
  21. History of Installations: Shall have installations of the specified roofing system in the south Florida area for a minimum of 3 years.
  22. Installer: Manufacturers shall have an on-going approved installer program.
  23. Manufacturer’s Field Representative: Provide technical representatives (employees) to inspect the installation of the roofing systems as necessary to assure installation is in accordance with warranty requirements.

(a) Provide written reports of observations and recommendations to the Architect or Engineer on a weekly basis.

  1. Installer: The roofing and associated work shall be contracted to a single firm, called the “Installer” hereafter, specializing in the type of roofing required, so that there will be undivided responsibility for the performance of the work.
  2. Installer’s Qualifications: A single installer shall perform the work of this Section; and shall be a firm with not less than 3 years of successful experience in the installation of roofing systems specified in this section.
  3. Installer Certification: Provide the Owner with written certification from the manufacturer of the roofing system certifying that the installer is approved by the manufacturer for installation of the specified roofing system. Provide a copy of the certification to the Owner prior to award of the contract.
  4. Installer Licensing: The installer shall be a State Certified Roofing Contractor, certified by the State of Florida, Construction Industry Licensing Board.
  5. Installer’s Field Supervision: Installer must maintain a full-time supervisor/ foreman on the job-site during times that the roofing work is in progress. Supervisor must have minimum of 5 years experience in roofing work specified in this section.
  6. Provide a list of 5 completed projects installed in the south Florida HVHZ area.
  7. UL Listing (or other testing agencies approved by FBC): Provide roofing systems and component materials that have been tested for application and slopes indicated and are listed by Underwriters Laboratories, Inc. (UL) for Class A external fire exposure.
  8. Provide roof covering materials bearing classification marking (UL) on bundle, package or container indicating that the materials have been produced under UL’s classification and follow-up services.
  9. Testing Agency: The Owner at its option and expense, may select and employ an Independent Roofing Inspection Service specializing in non-destructive evaluations (NDE), for moisture detection purposes, before final acceptance of the roofing systems. Contractor shall be responsible for any repairs deemed necessary to insure any moisture intrusion into the system. Upon completion of any repairs, an additional NDE moisture test shall be to verify compliance. A failure or non-compliance will result in the Contractor being responsible for the cost of the second test plus the cost of additional testing and repairs necessary to insure against moisture intrusion.
  10. Code Compliance.
  11. Building Code: The complete roofing system shall comply with all applicable requirements of the Florida Building Code.
  12. Product Approvals: Roofing system shall have current FBC HVHZ Protocols and required product Notice of Acceptance (NOA) for each roofing system applied to each type of substrate.
  13. Wind Resistance: Execute the installation of the roofing system (including insulation and flashings) to comply with wind resistance requirements of applicable building codes for specific negative wind pressures at various building elevations (heights) as indicated on the Drawings.

(a) Calculations: Wind load calculations shall be prepared by a licensed structural engineer registered in the State of Florida in accordance with ASCE 7.

  1. Base Flashings Containing Non-Friable Asbestos:

(a) Remove non-friable asbestos-containing base flashings in accordance with OSHA, NESHAPS, and Notice of Acceptance requirements.

1.7 PRE-INSTALLATI0N MEETING

  1. Shall not occur without approved Shop Drawings by the Contractor and A/E. Shall convene a minimum of two weeks before starting work of this section.
  2. Required Attendees:
  3. Contractor.
  4. Roofing subcontractor.
  5. Roof System Manufacturer.
  6. Installers of deck or substrate construction to receive roofing work.
  7. Installers of roof-top units and other work in and around roofing that must precede or follow roofing work (including mechanical work if any).
  8. Any other subcontractors associated with roofing work.
  9. Architect.
  10. Owner’s Project Manager.
  11. Owner’s Maintenance Foreman.
  12. Building Department Representative.
  13. The Contractor shall make arrangements for the meeting and notify the parties required to attend.
  14. Agenda shall include:
  15. Review preparation and installation procedures and coordinating and scheduling required with related work.
  16. Review roof system requirements (drawings, specifications, and other contract documents).
  17. Review Shop Drawings and associated submittals.
  18. Review manufacturer's technical materials.
  19. Review and finalize construction schedule related to roofing work and verify availability of materials, personnel, equipment and facilities needed to make progress and avoid delays.
  20. Review required inspection, testing, certifying and material usage accounting procedures.
  21. Review weather and weather forecast conditions, and procedures for coping with unfavorable conditions, including temporary roofing.
  22. Tour representative areas of roofing substrates (decks), inspect and discuss condition of the substrate, roof drains, curbs, penetrations and other preparatory work performed by other trades.
  1. DELIVERY, STORAGE, AND HANDLING
  2. Deliver roofing materials and accessories in manufacturer's original protective containers with labels intact and legible. Comply with manufacturer's published instructions for storage and handling.
  3. Each pallet, container, or unit shall have the material manufacturer’s name and brand designation clearly listed.
  4. Store materials in dry protected areas, on clean, raised platforms with securely anchored weather protective covering.
  5. Store rolled goods on a clean, flat, dry and elevated surface.
  6. Store material on the roof overnight only for use first thing the next day. Such materials shall be stored on pallets.
  7. Store materials on roof in a manner to prevent overloading of deck.
  8. Store flammable materials away from open flames, sparks or excessive heat.
  9. Cover all materials with polyethylene or other waterproof plastic coverings.
  10. Handle all materials in a manner to prevent damage and contamination with moisture or foreign matter. Handle rolled goods to prevent damage to edges or ends.
  11. Damaged Materials: Immediately mark with an “X” of yellow spray paint and remove and replace damaged or improperly stored materials from project site.
  12. Store and handle roofing sheets in a manner, that will insure that there is no possibility of moisture pick-up. Store in a dry, well ventilated, weather-tight place, or store properly protected from weather or other moisture sources by leak-proof coverings and/or manufacturer’s original un-opened containers. Do not leave unused felt on the roof overnight or when roofing work is not in progress without proper weather-tight protection.
  13. Handle and store materials or equipment in a manner to avoid significant or permanent deflection of deck. The installer is responsible for any structural damage occurring due to the storage of materials or equipment on the roof.
  14. All materials shall be stored in locked, watertight trailers or in watertight coverings on roof.
  15. PROJECT CONDITIONS
  16. Owner may occupy the existing premises during the entire period of the roof removal and replacement. Cooperate with Owner's Representative during construction operations to minimize conflict, and to facilitate continued use of the facility.
  17. Coordinate scheduling with the Owner in order to protect the building occupants and to protect the building contents from damage during construction operations.
  18. Do not permit traffic or material storage on completed roof surfaces.
  19. ENVIRONMENTAL REQUIREMENTS
  20. Weather Condition Limitations: Proceed with roofing work only when existing and forecasted weather conditions will permit work to be performed in accordance with the manufacturer’s recommendations and warranty requirements.
  21. Suspend all application and installation activities during inclement weather. Proceed with roofing work only when weather conditions comply with manufacturer’s recommendations. Do not exceed temperature limitations recommended by the manufacturer.
  22. Protect adjacent building surfaces against damage and material spillage.
  23. Night Seals/Water Cut Offs: Protect roof deck and insulation from moisture by providing water cut-offs at the end of each day's work or when the weather is threatening. Failure to protect the deck insulation and roofing from moisture will require the removal of damaged materials or materials containing excessive moisture. Remove water cut-offs prior to start of new work.
  24. Water Infiltration: If water infiltrates under or between the roofing plies or insulation during the installation of the roofing system, remove and replace that portion of the roof, including wet insulation.
  25. SEQUENCING
  26. Sequence installation of roofing with related units of work specified in other sections to ensure that roof assemblies, including roof insulation, flashing, trim, accessories, and joint sealers, are protected against damage from effects of weather, corrosion, and adjacent construction activity.
  27. SPECIAL WARRANTIES
  28. Total System Warranty by manufacturer: Provide manufacturer’s Non-Pro Rated 20-year written full warranty, NDL (No Dollar Limit), with a wind rider up to winds equal to the design wind speeds required by the Florida Building Code, in which manufacturer agrees to repair or replace components of roofing system that fail in materials or workmanship within the specified warranty period. Failure includes roof leaks. The warranty shall be a term type, with no conditions, exclusions, including exclusions of remedies by the Owner, deductibles or limitations on coverage amount. Any conditions, exclusions, or limits proposed by the manufacturer must be approved by the Project Consultant and Owner in writing.
  29. Roofing System includes, but is not limited to: Roofing membranes (base, inter, and cap plies as applicable), roof insulation (foam and LWIC including EPS board), fasteners, cover and deck boards, accessories, flashing and sheet metal, grounds/nailers, gutters and downspouts, scuttles and vents, curbs, and other components of roofing system.
  30. Total System Warranty by installer: Provide installer’s 5-year warranty, in which installer agrees to repair or replace components of roofing system that fail in materials or workmanship with the specified warranty period. Failure includes roof leaks. The warranty shall be a term type, with no conditions, exclusions, exclusions of remedies by the Owner, deductibles or limitations on coverage amount. Any conditions, exclusions, or limits proposed by the installer must be approved by the Project Consultant and Owner in writing. Each Installer shall list which roof system component(s) are covered by them.

PART 2 PRODUCTS

2.1 MEMBRANE GENERAL

  1. Membrane with the same formulation shall have a minimum of ten year documented use on south Florida roofs similar in size and complexity to this project. No sub-manufactured products shall be allowed.
  2. Minimum Solar Reflectance Index (SRI) compliant with ASTM E1980, 78 for roofs less than or equal to a 2:12 pitch and 29 for roofs greater than or equal to a 2:12 pitch.
  1. ELVALOY ALLOY KEYTONE ETHYLENE ESTER (KEE) ROOFING MEMBRANE
  2. KEE Sheet: Comply with ASTM D 6754, smooth type, fabric reinforced.
  3. Manufacturers: Subject to compliance with the specified requirements, provide products by the following manufacturer:
  4. GAF Materials Corp.
  5. Seaman Corp. (Fibertite).
  6. Stevens Roofing Systems (EV).
  7. Substitutions: Will be considered by the A/E and Owner when submitted per requirements of Division-0, Division-1, and Section 01630-Product Substitution Procedures.
  8. Thickness: 60 mils, minimum (+/- 2 mils).
  9. Exposed Face Color: White.
  10. THERMOPLASTIC POLYOLEFIN (TPO) ROOFING MEMBRANE
  11. TPO Sheet: ASTM D 6878, smooth type, polyester reinforced.
  12. Manufacturers: Subject to compliance with the specified requirements, provide products by the following manufacturer:
  13. Firestone Building Products Company (Ultraply).
  14. GAF Materials Corp.
  15. Johns Manville.
  16. Versico (Versiweld).
  17. Substitutions: Will be considered by the A/E and Owner when submitted per requirements of Division-0, Division-1, and Section 01630-Product Substitution Procedures.
  18. Thickness: 60 mils, minimum (+/- 2 mils).
  19. Exposed Face Color: White.
  20. ROOF INSULATION, CRICKETS/SADDLES, COVER BOARD, and DECK BOARD
  21. Refer to Section 07220-Roof Insulation where applicable.
  22. Refer to Section 03520-Lightweight Insulating Concrete where applicable.
  23. MISCELLANEOUS MATERIALS
  24. General: Auxiliary materials recommended by roofing system manufacturer for intended use and compatible with membrane roofing.
  25. Sheet Flashing: Manufacturer's standard sheet flashing of same material, type, reinforcement, thickness, and color as Thermoplastic sheet membrane.
  26. Bonding Adhesives, Sealants, Mastics and Solvents: As supplied or approved by membrane manufacturer.
  27. Metal Termination Bars: Manufacturer's standard predrilled metal bars, comply with Florida Building Code (FBC) High Velocity Hazard Zone (HVHZ) Protocols and required product Notice of Acceptance (NOA).
  28. Metal Battens: Manufacturer's standard steel sheet, comply with Florida Building Code (FBC) High Velocity Hazard Zone (HVHZ) Protocols and required product Notice of Acceptance (NOA).
  29. Fasteners: Factory-coated steel fasteners and metal or plastic plates, corrosion-resistant, designed for fastening membrane or insulation to substrate, and acceptable to membrane roofing system manufacturer and comply with Florida Building Code (FBC) High Velocity Hazard Zone (HVHZ) Protocols and required product Notice of Acceptance (NOA).
  30. Miscellaneous Accessories: Provide pourable sealers, preformed cone and vent sheet flashings, preformed inside and outside corner sheet flashings, T-joint covers, termination reglets, cover strips, slip sheet, and other accessories.
  31. Provide preformed saddles, crickets, tapered edge strips, and other shapes where indicated for sloping to drain. Fabricate to slopes indicated.
  32. Traffic Pads: Traffic Pads: Cap sheet membrane manufacturer’s standard factory-formed, nonporous, heavy-duty, slip resistant, surface-textured pads or rolls, .080 inches thick minimum, 28 inches wide minimum. Color: Shall be contrasting color to the roof cap sheet.

PART 3 EXECUTION